Malicious PDF — malware analysis report

Static analysis result for SHA-256 8499a68ec47e8457…

MALICIOUS

PDF

34.1 KB Created: 2021-07-10 03:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d590d029759c841a5b141617b66ebcf1 SHA-1: c91f586dd44d03f371f5ce022438a48d1baa58f0 SHA-256: 8499a68ec47e8457f7bea3d04377816bb81b2a51580f86b7ec80c11fd839ac76
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free game hacks' to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/how-to-win-robux-game-hack, is identified as a redirector to potentially malicious content. The ML classifier strongly indicates maliciousness, and the presence of numerous similar lures reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/how-to-win-robux-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-4all-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/robux-survey_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-vehicle-simulator-how-to-get-free-cars_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-robux-on-roblox-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED2 22196 bytes
SHA-256: cde29c4fa6bdb9fe37e5688c82983785ec38e2cb7195ee1e37436c51a9ad812a
font_01_sfnt_off00006014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 19036 bytes
SHA-256: 44ba9238ce75834a6a7dc58668eb2302b56eb81db97fd63e2fbbc9b74053b22d

Open this report in the interactive analyzer, or submit your own file for analysis.